Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

25. The Urinary System

Renal Physiology Step 2: Tubular Reabsorption

Anatomy & Physiology

25. The Urinary System

Renal Physiology Step 2: Tubular Reabsorption

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Multiple Choice

Which of the following is true about tubular reabsorption in the nephron?

It is responsible for the filtration of blood.

It occurs exclusively in the collecting duct.

It primarily occurs in the glomerulus.

It involves the movement of substances from the tubular fluid back into the blood.

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Verified step by step guidance

Understand the function of tubular reabsorption: Tubular reabsorption is a process in the nephron where substances are moved from the tubular fluid back into the blood. This is crucial for reclaiming water, ions, and nutrients that the body needs.

Identify the location of tubular reabsorption: Tubular reabsorption primarily occurs in the proximal convoluted tubule, but it also takes place in other parts of the nephron such as the loop of Henle, distal convoluted tubule, and collecting duct.

Differentiate between filtration and reabsorption: Filtration occurs in the glomerulus, where blood plasma is filtered into the nephron. Reabsorption, on the other hand, is the process of moving substances from the nephron back into the bloodstream.

Clarify the role of the collecting duct: While some reabsorption occurs in the collecting duct, it is not exclusive to this part of the nephron. The collecting duct primarily concentrates urine by reabsorbing water.

Conclude with the correct statement: The correct statement about tubular reabsorption is that it involves the movement of substances from the tubular fluid back into the blood, ensuring essential materials are retained by the body.